Tamper respondent enclosure

Abstract

The method is disclosed for producing a tamper respondent enclosure (10). A flexible tamper respondent laminate (32) is folded to define an inner enclosure (26) which is then potted within an outer enclosure in the form of a molding (28).

I claim: 
     
       1. A method of producing a tamper respondent enclosure comprising the steps of: providing a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof;   folding the sheet and overlapping the edges thereof to define an inner enclosure with the delamination respondent layer presented on the outer surface thereof;   surrounding the inner enclosure with a layer of fluid material; and   hardening the fluid material to provide a solid outer enclosure adhered to the inner enclosure.   
     
     
       2. A method of producing a tamper respondent enclosure comprising the steps of: providing a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof;   folding the sheet and overlapping the edges thereof to define an inner enclosure with the delamination respondent layer presented on an outer surface thereof;   surrounding the inner enclosure with a layer of fluid material; and   hardening the fluid material to provide a solid outer enclosure adhered to the inner enclosure the fluid material being initially contained in a mold around the inner enclosure.   
     
     
       3. A method of producing a tamper respondent enclosure comprising the steps of: providing a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof;   folding the sheet and overlapping the edges thereof to define an inner enclosure with the delamination respondent layer presented on an outer surface thereof;   surrounding the inner enclosure with a layer of fluid material; and   hardening the fluid material to provide a solid outer enclosure adhered to the inner enclosure,   The fluid material being initially contained in a mold around the inner enclosure and   a window being formed in the outer enclosure during molding.   
     
     
       4. A method of producing a tamper respondent enclosure comprising the steps of: providing a sheet of flexible material incorporating a tamper respondent means including a delamination respondent layer on at least one side thereof;   folding the sheet and overlapping the edges thereof to define an inner enclosure with the delamination respondent layer presented on the outer surface thereof;   surrounding the inner enclosure with a layer of fluid material; and   hardening the fluid material to provide a solid outer enclosure adhered to the inner enclosure, the fluid material being initially contained in a mold around the inner enclosure, and   mounting lugs being formed in the outer enclosure during molding.   
     
     
       5. The method of claim 2, in which a tamper evident pattern is formed in the outer surface of the enclosure during molding. 
     
     
       6. The method of claim 1, in which the fluid material is selected to harden at a relatively low temperature, to minimize the possibility of heat damage to the inner enclosure and articles contained within the enclosure. 
     
     
       7. The method of claim 1, in which the fluid material is a cold pour polyurethane system. 
     
     
       8. The method of claim 1, in which the fluid material is selected such that the outer enclosure is resilient on hardening. 
     
     
       9. The method of claim 1, in which an adhesive bond is formed between the outer surface of the inner enclosure and the outer enclosure on curing of the fluid material, and the adhesive bond formed between elements of the delamination respondent layer and the outer enclosure is greater than the adhesive between said elements of the delamination respondent layer and the flexible sheet. 
     
     
       10. The method of claim 9, in which the delamination respondent layer includes a line of electrically responsive material. 
     
     
       11. A tamper respondent enclosure comprising: a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof, the sheet being folded and the edges of the sheet overlapped to define an inner enclosure and to present the delamination respondent layer on the outer surface thereof; and   a unitary outer enclosure adhered to and encapsulating the inner enclosure.   
     
     
       12. The enclosure of claim 11, in which outer enclosure extends into any gaps and spaces between overlapping portions of the folded sheet. 
     
     
       13. The enclosure of claim 11, in which the outer enclosure is sufficiently thick and opaque to conceal the location of the folds and seams of the inner enclosure, and also to conceal the exact location of the inner enclosure within the outer enclosure. 
     
     
       14. A tamper respondent enclosure comprising: a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof, the sheet being folded and the edges of the sheet overlapped to define an inner enclosure and to present the delamination respondent layer on an outer surface thereof; and   a unitary outer enclosure adhered to and encapsulating the inner enclosure a window being provided in the outer enclosure.   
     
     
       15. The enclosure of claim 11, in which a tamper evident pattern is provided in the outer surface of the enclosure. 
     
     
       16. The enclosure of claim 11, in which the outer enclosure is resilient. 
     
     
       17. The enclosure of claim 11, in which a chemical bond is provided between the outer surface of the inner enclosure and the outer enclosure. 
     
     
       18. The enclosure of claim 11, in which the adhesion between elements of the delamination respondent layer and the outer enclosure is greater than the adhesion between said elements of the delamination respondent layer and the flexible sheet. 
     
     
       19. The enclosure of claim 11, in which the delamination respondent layer includes a line of electrically responsive material, the enclosure further including means for monitoring an electrical characteristic of the line. 
     
     
       20. The enclosure of claim 19, in which connection members are provided between the monitoring means and the line at an edge portion of the sheet provided with connecting locations for the line, and the connection members extend parallel to said edge. 
     
     
       21. A tamper respondent enclosure comprising: a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof, the sheet being folded and the edges of the sheet overlapped to define an inner enclosure and to present the delamination respondent layer on an outer surface thereof; and   a unitary outer enclosure adhered to and encapsulating the inner enclosure,   the flexible sheet including a laser and pierce respondent layer including tracks of electrically responsive material on opposite sides of an electrically insulating film, each track being nonrectilinear.   
     
     
       22. A tamper respondent enclosure having a wall including a laser and pierce respondent layer including nonrectilinear tracks of electrically responsive material on opposite sides of an electrically insulating sheet, the tracks on opposite sides of the sheet being arranged such that a portion of track covers at least one side of the sheet over the entire area extent of the sheet, and means for monitoring an electrical characteristic of the tracks, an attempt to penetrate any part of the layer resulting in one or more of the tracks being damaged to produce a detectable change in a monitored electrical characteristic of the track. 
     
     
       23. A method of producing a tamper respondence enclosure comprising the steps of: providing a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof;   folding the sheet and overlapping the edges thereof to define an inner enclosure with the delamination respondent layer presented on the outer surface thereof;   surrounding the inner enclosure with a layer of fluid material, leaving a portion of the inner enclosure free of said fluid material, and   hardening the fluid material to provide a solid outer enclosure adhered to the inner enclosure and provided with a window at said portion of the inner enclosure.   
     
     
       24. A tamper respondent enclosure comprising: a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof, the sheet being folded and the edges of the sheet overlapped to define an inner enclosure and to present the delamination respondent layer on the outer surface thereof, and   a molded unitary outer enclosure adhered to and surrounding the inner enclosu4re and defining a window permitting limited access to the inner enclosure.   
     
     
       25. A tamper respondent enclosure comprising: a sheet of flexible material incorporating tamper respondent means including a delamination respondent layer on at least one side thereof, the sheet being folded and the edges of the sheet overlapped to define an inner enclosure and to present the delamination respondent layer on the outer surface thereof; and   a molded unitary outer enclosure adhered to and encapsulating the inner enclosure.